发明名称 |
CLAY-POLYURETHANE NANOCOMPOSITE AND METHOD FOR PREPARING THE SAME |
摘要 |
<p>Disclosed herein is a clay-polyurethane nanocomposite comprising a clay and a polyurethane covalently bonded to the surface of the clay wherein the polyurethane is formed by reacting a clay-containing diisocyanate compound with a polyol, the clay-containing diisocyanate compound contains a diisocyanate compound covalently bonded to surface silanol groups of the clay and 0.5-5% by weight of the clay based on the diisocyanate compound, and the clay is exfoliated by the polyurethane such that no wide-angle X-ray diffraction (WAXD) peak is detected between 2° and 10° by XRD measurement. The clay-polyurethane nanocomposite has a structure wherein the clay layers are completely exfoliated, rather than a structure wherein the polyurethane is intercalated between the clay layers. Accordingly, the clay-polyurethane nanocomposite has superior physical properties to a pure polyurethane. In addition, the clay-polyurethane nanocomposite can be foamed to prepare a foamed clay-polyurethane nanocomposite, which has superior physical properties, such as mechanical strength and flame retardance, to a common polyurethane foam.</p> |
申请公布号 |
WO2005082993(A1) |
申请公布日期 |
2005.09.09 |
申请号 |
WO2005KR00038 |
申请日期 |
2005.01.07 |
申请人 |
KOREA UNIVERSITY INDUSTRY AND ACADEMY COOPERATION;KIM, WOO NYON;SEO, WON JIN;HAN, JAE SUNG |
发明人 |
KIM, WOO NYON;SEO, WON JIN;HAN, JAE SUNG |
分类号 |
C08K3/34;C08K7/10;(IPC1-7):C08K7/10 |
主分类号 |
C08K3/34 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|